CVE-2026-56254
HighCVSS 7.0Summary
The vulnerability in @capgo/capacitor-updater before version 12.128.2 distributes the private key to each device downloading the app. This allows an attacker performing a man-in-the-middle attack or compromising the Capgo server to create a validly signed update bundle and force devices to install unauthorized updates.
Risk Assessment
The organization is at risk of unauthorized updates being installed on user devices, potentially leading to malicious code injection, data theft, or application takeover.
Recommendation
Immediately update the @capgo/capacitor-updater library to version 12.128.2 or later, which includes a fix for this vulnerability.
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Original NVD description (English source)
In @capgo/capacitor-updater (Cap-go/capgo) before 12.128.2, the end-to-end encryption scheme distributes the private key to each device that downloads the app. Because the public key can be derived from the private key, an attacker performing a man-in-the-middle attack or compromising the Capgo server can create a validly signed update bundle and cause devices to install an update not produced by the original app maker.